[PATCH v4 0/2] drm/panel: add support for Ilitek ILI7807S DSI panels

[Arpit Saini <arpit.saini@oss.qualcomm.com>]

Add DT bindings and a DRM panel driver for panels based on the Ilitek
ILI7807S display controller. The first supported panel is the DLC
DLC0697 1080x1920@60Hz MIPI DSI panel.

Changes in v4:
- Use active-low reset GPIO semantics: define reset-gpios as active-low
  in DT and use hold=1/drop=0 in the driver (Dmitry Baryshkov)
- Replace raw DCS writes with proper helpers: mipi_dsi_dcs_set_tear_on_multi(),
  MIPI_DCS_SET_CABC_MIN_BRIGHTNESS, MIPI_DCS_WRITE_CONTROL_DISPLAY,
  MIPI_DCS_WRITE_POWER_SAVE (Dmitry Baryshkov)
- Use mipi_dsi_dcs_set_display_brightness_multi() with 0x1fff initial
  brightness (Dmitry Baryshkov)
- Move MIPI_DSI_MODE_LPM to probe(), drop toggling in on()/off()
  (Dmitry Baryshkov)
- Express .clock as arithmetic expression for clarity (Dmitry Baryshkov)
- Update panel physical dimensions width_mm/height_mm (Dmitry Baryshkov)
- Link to v3: https://lore.kernel.org/r/20260624-ili7807s-v3-0-ddf37052a289@oss.qualcomm.com

Changes in v3:
- Return devm_mipi_dsi_attach() directly (Neil Armstrong)
- Link to v2: https://lore.kernel.org/all/20260618-ili7807s-v2-0-b3f0c109b102@oss.qualcomm.com/

Changes in v2:
- Drop MAINTAINERS entry (Dmitry Baryshkov)
- Use devm_drm_panel_add() instead of drm_panel_add() to avoid
  manual drm_panel_remove() in the error path (Dmitry Baryshkov)
- Rework backlight: call drm_panel_of_backlight() first and fall back
  to creating a DCS backlight device if panel->backlight is still NULL
  (Dmitry Baryshkov)
- Remove backlight-en-gpios from the binding (Dmitry Baryshkov)
- Fix mode_flags LPM not restored on backlight update error path
- Link to v1 : https://lore.kernel.org/all/20260518-ili7807s-panel-v1-0-d7b048163b1c@oss.qualcomm.com/

---
Arpit Saini (2):
      dt-bindings: display: panel: add Ilitek ILI7807S panel controller
      drm/panel: add Ilitek ILI7807S panel driver

 .../bindings/display/panel/ilitek,ili7807s.yaml    |  71 +++++
 drivers/gpu/drm/panel/Kconfig                      |  12 +
 drivers/gpu/drm/panel/Makefile                     |   1 +
 drivers/gpu/drm/panel/panel-ilitek-ili7807s.c      | 285 +++++++++++++++++++++
 4 files changed, 369 insertions(+)
---
base-commit: 4e5dfb7c84012007c3c7061126491bbc92d71bf1
change-id: 20260615-ili7807s-panel

Best regards,
-- 
Arpit Saini <arpit.saini@oss.qualcomm.com>